Supporting bracket



FIG. 1 is a perspective view of the supporting bracket showing my new design;

FIG. 2 is a left side view of the supporting bracket, the opposite view being a mirror image thereof;

FIG. 3 is a top plan view of the supporting bracket;

FIG. 4 is a front view of the supporting bracket;

FIG. 5 is a rear view of the supporting bracket;

FIG. 6 is a bottom plan view of the supporting bracket;

FIG. 7 is a perspective view of another embodiment of the supporting bracket showing my new design;

FIG. 8 is a left side view of the supporting bracket, the opposite view being a mirror image thereof;

FIG. 9 is a top plan view of the supporting bracket;

FIG. 10 is a front view of the supporting bracket;

FIG. 11 is a rear view of the supporting bracket; and,

FIG. 12 is a bottom plan view of the supporting bracket. 

The ornamental design for a "supporting bracket", as shown and described. 